<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>图书分类查询</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
        }

        h1 {
            text-align: center;
            color: #333;
        }

        .controls {
            margin-bottom: 20px;
            display: flex;
            gap: 10px;
            align-items: center;
        }

        select {
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }

        button {
            padding: 8px 16px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }

        button:hover {
            background-color: #45a049;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th, td {
            padding: 10px;
            border: 1px solid #ddd;
            text-align: left;
        }

        th {
            background-color: #f2f2f2;
        }

        .error {
            color: red;
            text-align: center;
            padding: 20px;
        }
    </style>
</head>
<body>
<h1>图书分类查询</h1>
<form action="${pageContext.request.contextPath}/books" method="post">
    <input type="hidden" name="action" value="getAll">
    <label for="classify">要查询对的图书分类:</label>
    <select name="classify" id="classify">
        <option value="MARXISM_LENINISM">马列主义</option>
        <option value="PHILOSOPHY">哲学</option>
        <option value="SOCIAL_SCIENCES">社会科学</option>
        <option value="NATURAL_SCIENCE">自然科学</option>
        <option value="COMPREHENSIVE_BOOKS">综合性图书</option>
    </select>
    <input type="submit" value="查找">
</form>
</body>
</html>